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经营范围
发明名称
Gas mask
摘要
申请公布号
US2337232(A)
申请公布日期
1943.12.21
申请号
US19410394458
申请日期
1941.05.21
申请人
SYLVESTER DALY
发明人
DALY SYLVESTER
分类号
A62B19/00
主分类号
A62B19/00
代理机构
代理人
主权项
地址
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